external sample

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• Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …   Wikipedia

• External validity — is the validity of generalized (causal) inferences in scientific studies, usually based on experiments as experimental validity. [ Mitchell, M. Jolley, J. (2001). Research Design Explained (4th Ed) New York:Harcourt.] Inferences about cause… …   Wikipedia

• Sample rate conversion — is the process of converting a (usually digital) signal from one sampling rate to another, while changing the information carried by the signal as little as possible. When applied to an image, this process is sometimes called image scaling.Sample …   Wikipedia

• Sample Preparation Equipment — refers to equipment used for the preparation of physical specimens for subsequent microscopy or related disciplines including failure analysis and quality control. The equipment includes the following types of machinery:* Precision cross… …   Wikipedia

• sample preparation — ▪ chemistry Introduction  in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …   Universalium

• Sample (statistics) — In statistics, a sample is a subset of a population. Typically, the population is very large, making a census or a complete enumeration of all the values in the population impractical or impossible. The sample represents a subset of manageable… …   Wikipedia

• Sample size — The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n , a positive integer (natural number).Typically, all else being equal, a larger sample size leads to increased precision in… …   Wikipedia

• Sample and hold — In electronics, a sample and hold circuit is used to interface real world signals, by changing analogue signals to a subsequent system such as an analog to digital converter. The purpose of this circuit is to hold the analogue value steady for a… …   Wikipedia

• Sample-McDougald House — Infobox nrhp name = Sample McDougald House caption = location = Pompano Beach, Florida lat degrees = 26 lat minutes = 14 lat seconds = 24.41 lat direction = N long degrees = 80 long minutes = 07 long seconds = 01.60 long direction = W area =… …   Wikipedia

• Sample Estate — Infobox nrhp name = Sample Estate caption = locator x = 238 locator y = 164 location = Pompano Beach, Florida area = added = March 1, 1984 visitation num = visitation year = governing body = The Sample Estate (also known as the McDougald House)… …   Wikipedia

• External examiner — The external examiner plays an important role in all degree level examinations in higher education in the United Kingdom. The external examiner system was introduced into the UK during the 19th century, and it is therefore also found in countries …   Wikipedia